Chair arm



FIG. 1 is a front perspective view of the chair arm of my design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a cross-sectional view taken along line 8--8 in FIG. 5.

The broken line showing in the drawing figures is for environmental purposes only and forms no part of the claimed design. 

The ornamental design for a chair arm, as shown and described. 